"We have police officers in the audience here today who just arrived from New Hampshire. We have police officers that arrived here yesterday from Ohio," Burrillville Police Department Col. Stephen Lynch said.

Tyler was released from the hospital just in time for the big party. Birthday messages keep pouring in.

Hundreds of first responders gathered to wish Tyler well brought him gifts, cards, patches, uniform and memorabilia.

"My house is full of boxes. We have a 10-by-20 storage unit that's half full. So, we'll have a lot of presents to go through -- probably until next birthday!" Tyler's mother, Rachel Seddon said.

One of the gifts was presented by someone who feels a special kinship. Deborah Hanna-Kearney is the daughter of a Massachusetts State Police trooper killed in the line of duty.

"I was given this jacket and I want to give it to you. This is a real State Police jacket," she said.

Hanna-Kearney loves the police as much as Tyler, but she also understands his illness.

"It touches me because I'm a carcinoid lung cancer survivor. So, I wish Tyler the very best of luck," she said.

"Honestly, I think the whole world needs to see something positive in the news and I'm glad that we're part of it. I think it's amazing that there's so much support out there one child," Seddon said.

The celebration has grown out of Rachel Seddon's Facebook post that asked first responders to send cards to Tyler to make his seventh birthday special. He's had a tough fight with leukemia.

"He touched our heartstrings. It was something we wanted to do," said Deputy Rhonda Rose, of Fairfield, Ohio. "We are 700 miles (away)."

Tyler is also in need of a bone marrow transplant, and party guests can sign up to be possible donors.

BOTH OFFENSIVE WILL BE REPLEASED WITH ONES THAT COME IN NEUTRAL PACKAGING. TROOPS TURNED OUT IN FORCE TODAY CELEBRATING A LITTLE GY'S BIRTHDAY AND THE CORE RGOUS BATTLE AGAINST A LIFE THREATENING DISEASE. FOR TYLER AND HIS MOM, HEARTWARMING PROOF WHEN YOU PUT OUT A CALL TO FIRST RESPONDERS, THEY DO INDEED RERESPONSE. PHIL LIPOFS HERE WITH THE STORY. HEATHER, TYLER HAS FEW FRONT TEETH MISSING. LOVES TO PLAY. HE WANTS TO BE A POLICE OFFICER. TAYLOR IS NOT YOUR AVERAGE 7-YEAR-OLD. IT IS FIGHTING LEUKEMIA FOR THE SECOND TIME. IN FULL UNIFORM, IT WAS DAY TO HE IS SCAPE THE DISEASE EVEN IF JUST FOR A LITTLE WHILE. THIS WAS TAYLOR'S BIRTHDAY. ON THIS DAY, HE BECAME CHIEF OF POLICE IN VERGO, RHODE ISLAND. CROSS MY HEART. CROSS MY HEART. PINKY PROMISE. OH. YEAH. [APPLAUSE] AFTER THE SWEARING IN, A QUICK FUNNY FACE TO THE CAMERAS THEN TOUGH SCHOOL. TYLER HAS NOT BEEN HERE SINCE OCTOBER WHEN HIS CANCER CAME BACK. HE DESERVES ALL OF THIS. YOU KNOW, HE IS A CONDITIONED AND SWEET BOY. WE MISS HIM. THIS ALL PE GAN WHEN TAYLOR'S MOM ASKED FIRST RESPONDERS TO SEN HIM A BIRTHDAY CARD. THEY DID SO MUCH MORE THAN. THEY CAME IN PERSON. [CHEERING AND APPLAUDING] FROM ALL ACROSS THE COUNTRY, FIREFIGHTERS,. , THEY BROUGHT GIFTS, HATS, UNIFORMS, BUT PERHAPS NOTHING MORE POIG AND THAN THIS. I WAS GIVE IN THIS JACKET. I WANT TO GIVE IT TO YOU. THIS IS A REAL STATE POLICE JACKET. DEB BR HANNAH CARNEYS THE DAUGHTER OF A MASS STATE POLICE OFFICER KILLED IN THE LINE OF DUTY. THEY SHARE MORE THAN JUST THEIR LOVE FOR POLICE. IT ALSO TOUCHES ME. I WISH TAYLOR THE VERY BEST OF LUCK. EVERYONE DOES. ? HAPPY BIRTHDAY DEAR TYLER ? ? ? ? HAPPY BIRTHDAY TO YOU ? ? ? ? ? ? ? ? ? [CHEERING AND APPLAUDING] UNFORTUNATELY, THOUGH, TAYLOR IS GOING TO NEED MORE THAN JUST LUCK. HE NEEDS A BONE MARROW TRANSPLANT. AS HE GOES BED TONIGHT, NO DOUBTED, A BIG BEAUTIFUL SMILE ON HIS FACE. THE SEN THAT DONOR CONTINUES. HEATHER, ED? THAT IS WHERE EVERYONE CAN DO THEIR PART. CAN GO AND REGISTER WITH THE NATIONAL MARROW DONOR SOCIETY AND YOU CAN ACTUALLY GET A LITTLE SWAB OF THE CHEEK. THAT IS ALL IT TAKES. SEE IF YOU COULD BE THE MATCH. THAT WOULD BE THE PRESENT THAT TYLER REALLY NEEDS.